Drying-machine for fibrous materials.



F. a. SARGENT. DYRYI'NG MACHINE FOR EIBROUS MATERMLS.

APPLICATION FILED DEC.20,19II.

Patented Oct. 15, 1918.

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Patented Oct. 15, 1918.

OOOOOOO OOOOOOO F, G SARGENT.

DRYING MACHINE FOR FIBROUS MAIERIALS.

APPLICATION FILED DEC.20. l9l'l.

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FREDERICK G. SARGENT, OF WESTFORD, MASSACHUSETTS, ASSIGNOR TO C. G. S ARGENTS SONS CORPORATION, MASSACHUSETTS.

OF GRANITEVILLE. MASSACHUSETTS, A CORPORATION OF DRYING-MACHINE FOR FIBROUS MATERIALS Specification of Letters Patent.

Patented Oct. 15, 1918.

Application filed December 20, 1917. Serial No. 208,170.

To all whom it may concern:

Be it known that I. FREDERICK G. SAR- GENT, a citizen of the United States, residing at Westford, in the county of Middlesex and State of Massachusettshave invented a new and useful Drying-Machine for Fibrous Materials, of which the following is a specification. I I

This invention relates to a drier for use in drying fibrous materials, such as wool, hair and vegetable fiber.

The principal objects of the invention are to provide means whereby the course of air through the drier can be regulated to control its circulation and recirculation, and

to be dried.

also control the temperature and moisture of the same and to provide improved means for controlling the direction of most ofthe air-after it has once passed through the fibers .Driers of this type are provided with means for drawing the air through them and past a heating device in their course. It is obvious that the air once being heated by 2 this heating device can be recirculated to that control. The invention also involves A improvements in details of construction and [combinations of parts as will appear.

fin'g drawings in'which-- Figure 1 is a side elevation of a drier constructedinaccordance with this invention with parts in longitudinal section;

, Fig. 2' is a transverse sectional view on the line 22 of Fig. 1;

Fig. 3 is a transverse sectional view on the line of Fig. 1; Fig. 4 is a frontelevationpf ,kicker shown'in Fig. 1;

Fig. 5 is a similar view of another form of kicker, and i Fig. 6 is an edge view of the same.

The invention is shown as applied to a drier having a casing 10 and provided with one form of Reference is to be had to the accompanyf heated.

a horizontal support 11 for the fibrous ma terial preferably in the form of a horizontally moving conveyer. It will be understood of course, that the invention can be applied independently of whether there is one of these conveyers or more. This conveyer is supported by a casing or frame 12 inside the casing which does not occupy the full width of the casing, taken up by a series of fans 13 for drawing the air in through inlets 18 from the outside through passages- 14 under the casing 12 .and by a' heating device shown in the form I of a series of steam coils 15. These are located in such position that the air coming in through each fan 13 will pass through the heating coils and then in the form illustrated, up over the top of the support or conveyer 11 and down through it and the material locatedupon it. The part of the device just described is well known in this art and this invention relates to the control the rest of it being of the air after it passes through the fibrous 7 material for the first time.

In Fig. 1 three of the fans 13 are shown all operating to draw in air in the same way and circulate it through the coils and stock. One of them is shown as having no other function than that above described, but the other two are shown as located in interior casings 20, each of which casings has an opening at 21 directly under the conveyer 11 for receiving the air down through the conveyer and directing it of course back through the fan 13 into the drying-coils. This casing 20 constitutes a passage inside of the main casing 10 for directing the air from the fiber being dried back into the fan and causing it to be recirculated and re- For the purpose of controlling this operation I have shown the shaft 17 ongwhich the fan 13 is located as. constituting a pivotal su ort for two airs of swin ing frames '22. Each pair of swinging frames 22 supports a' curved valve 23 which togetherare adapted to close the opening 21 as shown in the central casi g 20 in Fig. 1. or to opcnit as shown in the right hand position. For

the purpose of operating it a shaft 2-1 is provided having arms 25 connected with the frames 22 by links 26. This shaft has a hand wheel 27 outside by which it can be oscillated.

with theupper' bar so 'eonveyet' transverse shafts 35* are: shown arranged to oscillate and" each; provided with a fiiied eross' rod 36 and a hlnge'd' cross rod '37 to 'w'hi'cli a kicker finger 38 is fixed. This i'o'r'ir'i of kicker is shown in my prior application-g: Serial No; 172,583, but in that case the' 'hinged bar was yieldingl y connected that it could swing back by gravity. In this case I provide springs .39 for assisting theaction' of'gravlty in tIiieteSpeet;

Anether form of kicker is indicated in Figsr 5 and 6, in which the cross shaft 40 is provided with cranks'el hingedto kicker members 42 Each et these kieker members is provided with a link 43, al-ll pivoted' on a' stationary rod 44 so as to modify the action thereof; These severa't kickers obviously week: at Various points in the cycle of operations so as to loosen up the stock in efiieiei'i t ma'n'n'er. I

i In operation the air is originally drawn 111 from the outside throughthe passages 14: by the fans'13 up through the heating coils, their down through thestock. If the valves of the t'w'o casings 20 at the right a're open the air will circulate down through these casings and be recirculated by the fans as indieatedby' the arrows in Fi 8. However,

' the fan at the l'eft'is not shown as provided va-Ives are closed will pass with any means for recirculating the air at thatpoint and that air, as well as that comtug-against any casing 20' in which the down two sides of the casing and through the passage 30 from one side, so that all the air comes into the' stacli 31 and is discharged from the machine; V v I In this way a most eflieient circulatin system is secured because it can be "controlled to allow mue'h'air as may, be desired to be recirculatedv and its dryness and -t'einperatiu-eeaiibe efleetiveiy' regulated; It 7 will "be" antl r-stood, of ourse, that while thereis draft froin'the ran e along both sides ofthe casing 20 when the i' alves-are opemyet the direct draft from the fan 13 that course;

Although I have'illustratetland described only two forme of the invention and shown the same as applied to a particular ty e: of drying-machine, I am aware of the fact that other modifications can be made in the invention and that it can be applied to other types of dryingmachineswithout departing from the scope oftiie invention as expressed '11 the claims; Therefore I do not wish to be limited in this respect, but whatI do claim is:

1'. In a drying machine, the combination of a casing, means for supportingithe stock to be dried in said casing, means for" drawing' air intothe' casing from outside and through the stock, means for heating the air, means for exhaustingtheair fr'oin' tlief casing, and-adjustable: means located in position' to receive the air as" it" passes" through the stock and directitbaclto the means for t'ion to receiveth'e air as it'passesthrough the stock and'direct it back to theinta lie' fan's, and means for controlling the passage of air through interior casing.

3. a drier for-fibrous materials. the combination ofa support forthemaferia'l to be dried, heating means in thedrier, a series of intake fans for, 'drawinggair' in from the exterior and directing it through the heat ngmeans and toward the'material' to be dried, casin'gslocated concentri' caliy with respect to said fans for receiving the air from thematerialtobe dried, and means for controlling the adtrnissioni ot'the air through the'easingsinto the intake fans;

combination of' a su-pq ort'forthe material means and'towardthe material" to be'dried,.;

'anexhaust, a casing located concentrically with respect'fo said air drawing means ,fd-irecting thea 'r away from the material to'be dried and into the exhaust, and means for opening and closing said casingv to, admit the air through it into saida'ir' drawing means, said casing extendingfthroughout the wrdthof the support for the fibrous mater1al from oneside wall of thedrier substantially to the air drawing} means, and

being open at the end toward the 'samee- 5.111 a drier for fibrous materials, the

I p n p combinationof a support for the material 15 stron er and most ofthe air' Will follow I I to" bedrie'd, heating means adj acent thereto, a series of lntake fans for; drawin air in from the exterior and direetingit" ti'irou h' the heating means and the material to e dried, casings'locatedi'concentrically with respect to said fans, andmeans for" opening and closing said casings to admit the air through them from the stock into the intake fans, said casings having passages through them longitudlnally with respect to the drier for taking the air from one side and directing it through to the other side and into the exhaust.

6. In a drier for fibrous materials, the combination of a support for the material to be dried, heating means at one side there of, a series of intake fans drawing air in from the exterior and directing it through the heating means and toward the material to be dried, casings located concentrically Copies of this patent may be obtained for five cents each, by addressing the with respect to said fans, their external surfaces normally directing the air away from the materials to be dried and into the exhaust, means for opening and closing said casings to admit the air through them into the intake fans, said means comprising pivoted valve plates, and means for simultaneously swinging them from or toward each other.

In testimony whereof I have hereunto affixed my signature.

FREDERICK G. SARGENT.

Commissioner of Iatents,

Washington, D. G. 

